Mikaeus, the Unhallowed, Blue, Loyal Raptor, and Shilgengar, Sire of Famine

Prerequisites

• Mikaeus, the Unhallowed on the battlefield
• Blue, Loyal Raptor on the battlefield
• Shilgengar, Sire of Famine on the battlefield

Steps

1. Activate Shilgengar by sacrificing the other Dinosaur
2. When the Dinosaur dies, its undying ability triggers, returning it from your graveyard to the battlefield without a +1/+1 counter on it due to the -1/-1 counter it will gain from Blue
3. Resolve the Shilgengar ability
4. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite Blood tokens